First of all thank you all for helping so many people selflessly. I set up a script in the examples of the forums. that an imported excel file calculate points and curves. I import the type family I order with vectors, but I do not extrude the family type. Can someone help me with this.
I put the wetransfer link with the files https://we.tl/t-sTMJvtuIyi

Your family is not properly constrained i.e. point 4. is not doing anything
It is a little difficult to say- but if you want the family to stretch in length but remain a constant radius for each end, you probably need to add some additional adaptive points- say 6 in total